单项选择题
A.0.15C10A B.0.2C10A C.0.25C10A
A.PbO2 B.Pb C.PbSO6
A.54.2V B.54.00V C.55.6V D.52.8V E.53.52V
A.THUNDERBOLT ALARM B.FIRE ALARM C.TEMPERATURE ALARM D.HUMIDITY ALARM
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